Attoenets



P. W.,MIX.

Padlock. i

No; 225,406. I Pa tentedrMar. 9, I880.

INVENTOR ATTORNEYS.

WITNESSES:

rLPEfERS, FHOTOJTH'HOGHAPHER. WASHINGTON, 0,0.

UNITED STATES PATENT OFFICE.

FRANK W. MIX, OF TERRYVILLE, CONNECTICUT, ASSIGNOR TO EAGLE LOCK COMPANY, OF SAME PLACE.

PADLOCK.

SPECIFICATION forming part of Letters Patent No. 225,406, dated March 9, 1880.

Application filed December 16, 1879.

To all whom it may concern:

Be it known that I, FRANK W. MIX, of Terryville, in the county of Litchfield and State of Connecticut, have invented a newlmprovement in Padlocks, of which the following is a specification.

My invention consists in certain novel features of construction and combination by which I obtain an easy-working padlock of compact and simple construction, such construction be- .ing applicable to plain and tumbler locks, and

for plate or barrel keys.

Theinvention will be particularly described with reference to the accompanying drawings, forming part of this specification, wherein- Figure 1 is a face view of the lock with the front plate of the case removed and the parts in a locked position. Fig. 2 is a face view of the front plate. Fig. 3 is a view similar to Fig. 1, except that the parts'are unlocked. Fig. at is a cross-section of the lockon line :1; w of Fig. 3. Fig. 5 is an elevation of the keypost detached. Fig. 6 represents one of the tumblers.

Similar letters of reference indicate corresponding parts.

The case of the lock is formed of two circular plates, (0 a, that are formed with raised edges, so that when the plates are attached together the sides of the case are of semicircular form. The plates at a are mortised radially at b to give a space through which the bolt projects to form a shackle.

The operative parts are carried by plate a, and, are as follows: The vibrating bolt 0 is fitted at the inner periphery of the case upon the end of a lever, d, that is pivoted on a central stud, 0, so that the bolt moves in the arc of a circle. The bolt is projected by a spring, f, that is sustained by the stud e and a second fixed stud, g. In the base of the stud g is fitted a blocking-piece, k, that projects through a slot in the edge of plate a, so as to be capable of radial movement, and the piece h is projected outward by a spiral spring which it carries, and which takes a bearing against the stud g. Upon the upper side of piece h is a projection, h, and from the lever 01 that carries the bolt projects a curved arm, d, that extends over the piece h, and is notched to engage with the projection h when the bolt is fully retracted, whereby the bolt is held in that position until released by pressure upon piece h to disengage the same.

The end of lever d at the back of stud e is formed as a toe, that enters the side of a slide, The slide i is sustained by and moves upon a stud or post, it, and fixed projection is, that project through slots in slide 45. The bolt 0 is moved by the action of the slidei on the lever cl, the slide 7? being moved directly by the key.

The plate a may be fitted with a pivot for a barrel-key but as shown the plates (0 a are apertured at Z to receive the ends of the rotatin g post I, Fig. 5, that is formed for receiving a plate-key of any usual character.

For a tumbler-lock, tumblers similar to the one shown at u in Fig. 6 are to be used. These will be hung on the post It, and have a T-slot at n to sit over a fixed projection, i, of

slide t, and are fitted with a spring, -0, to throw the tumblers forward and cause engagement between the projection t" and the shoulders of the T-slot.

In the locked position shown by Fig. l the bolt 0 is projected across the topof mortise I) through the opposite side, whereby a shackle is formed, adapting the lock for use as a padlock. The bolt is sustained by the edges of the case, and strain will come entirely on the bolt and case without efi'ect on the mechanism. To retract the bolt the slide 41 is to be thrown up by the key, thereby vibrating the bolt 0 back until the notch of arm d comes to the position which allows the piece h to spring out and catch the arm. To project the bolt it is only necessary to press upon the projecting end of h, which frees the arm d and permits spring f to act. 7

By having the slide 2' ,interposed between the key and bolt, instead of the key acting directly upon the bolt-lever, there is more space given for movement of the key and an easier action obtained. There is also opportunity for the introduction of tumblers.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-- 1. In padlocks, the vibrating bolt 0 on lever d, projected by a spring, operating slide 6, and springblocking piece h, combined together and with the lock-case substantially as described and shown.

2. 1n padlocks, the blocking-piece h, having a projection, h, and moved in a radial direction by a spring, combined with the vibrating bolt fitted With a notched arm, d, and the radiallymortised circular lock-case, substan- 1o tially as and for the purposes set forth.

3. In padlocks, in combination with a vibrating bolt, the slide fitted for movement by a key, and having a projection, 03, for engagement with slotted tumblers, substantially asi-sh'own and described.

FRANK W. MIX.

Witnesses R. I. PLUMB, H. B. PLUMB. 

